Here are the parameters of Allen - Bradley 2071 - AP series servo drives. Different models have some differences. The following takes 2071 - AP0, 2071 - AP1, 2071 - AP4 and 2071 - AP8 as examples: 2071 - AP0 Manufacturer: Rockwell Automation Brand: Allen - Bradley Product Line: Kinetix 3 servo drive Input Voltage: 240V AC (or 220V AC in some cases) Phase: One - phase Output Current: 0.6A Input Current: 1.3A Shunt Power: Not applicable Recommended Motor: TL - A120P Mode: Indexing Wattage: 50W Communication: RS - 232 and RS - 485 2071 - AP1 Manufacturer: Rockwell Automation Brand: Allen - Bradley Product Line: Kinetix 3 servo drive Input Voltage: 240V AC (or 230V AC in some cases) Phase: One - phase Output Current: 1.1A Input Current: 2.38A Shunt Power: Not applicable Recommended Motor: TL - A130P Mode: Indexing Wattage: 100W Communication: RS - 232 and RS - 485 2071 - AP4 Manufacturer: Rockwell Automation Brand: Allen - Bradley Product Line: Kinetix 3 servo drive Input Voltage: 240V AC Phase: One - phase Output Current: 3.3A Input Current: 7.14A Shunt Power: 30W Recommended Motor: TL - A230P Mode: Indexing Wattage: 400W Communication: RS - 232 and RS - 485 2071 - AP8 Manufacturer: Rockwell Automation Brand: Allen - Bradley Product Line: Kinetix 3 servo drive Input Voltage: 220V AC Phase: Four - phase Output Current: 5.0A Input Current: 5A Shunt Power: Not mentioned Recommended Motor: Not mentioned Mode: Not mentioned Wattage: 800W Communication: Not mentioned, but usually has relevant communication interfaces, and sercos interface is mentioned in some documents